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scsi: sg: Make sg_sysfs_class constant

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Since commit 43a7206b09 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the sg_sysfs_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240302-class_cleanup-scsi-v1-1-b9096b990e27@marliere.net
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Ricardo B. Marliere 2024-03-02 13:47:22 -03:00 committed by Martin K. Petersen
parent db06ae7ce9
commit f1fb41765d
1 changed files with 9 additions and 9 deletions
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18
drivers/scsi/sg.c
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@ -1424,7 +1424,9 @@ static const struct file_operations sg_fops = {
.llseek = no_llseek,
};
static struct class *sg_sysfs_class;
static const struct class sg_sysfs_class = {
.name = "scsi_generic"
};
static int sg_sysfs_valid = 0;
@ -1526,7 +1528,7 @@ sg_add_device(struct device *cl_dev)
if (sg_sysfs_valid) {
struct device *sg_class_member;
sg_class_member = device_create(sg_sysfs_class, cl_dev->parent,
sg_class_member = device_create(&sg_sysfs_class, cl_dev->parent,
MKDEV(SCSI_GENERIC_MAJOR,
sdp->index),
sdp, "%s", sdp->name);
@ -1616,7 +1618,7 @@ sg_remove_device(struct device *cl_dev)
read_unlock_irqrestore(&sdp->sfd_lock, iflags);
sysfs_remove_link(&scsidp->sdev_gendev.kobj, "generic");
device_destroy(sg_sysfs_class, MKDEV(SCSI_GENERIC_MAJOR, sdp->index));
device_destroy(&sg_sysfs_class, MKDEV(SCSI_GENERIC_MAJOR, sdp->index));
cdev_del(sdp->cdev);
sdp->cdev = NULL;
@ -1687,11 +1689,9 @@ init_sg(void)
SG_MAX_DEVS, "sg");
if (rc)
return rc;
sg_sysfs_class = class_create("scsi_generic");
if ( IS_ERR(sg_sysfs_class) ) {
rc = PTR_ERR(sg_sysfs_class);
rc = class_register(&sg_sysfs_class);
if (rc)
goto err_out;
}
sg_sysfs_valid = 1;
rc = scsi_register_interface(&sg_interface);
if (0 == rc) {
@ -1700,7 +1700,7 @@ init_sg(void)
#endif /* CONFIG_SCSI_PROC_FS */
return 0;
}
class_destroy(sg_sysfs_class);
class_unregister(&sg_sysfs_class);
register_sg_sysctls();
err_out:
unregister_chrdev_region(MKDEV(SCSI_GENERIC_MAJOR, 0), SG_MAX_DEVS);
@ -1715,7 +1715,7 @@ exit_sg(void)
remove_proc_subtree("scsi/sg", NULL);
#endif /* CONFIG_SCSI_PROC_FS */
scsi_unregister_interface(&sg_interface);
class_destroy(sg_sysfs_class);
class_unregister(&sg_sysfs_class);
sg_sysfs_valid = 0;
unregister_chrdev_region(MKDEV(SCSI_GENERIC_MAJOR, 0),
SG_MAX_DEVS);